Angewandte Chemie International Edition · 2005 · 83 citations · 12 references
EngineeringChemistryKetene 2Photoredox ProcessPhotophysical PropertyMolecular SpectroscopyBiophysicsPhotochemistryMechanistic PhotochemistryLaser SpectroscopyPhysical ChemistryQuantum ChemistryPhotochromismPhotoredox ReactionLaser PhotochemistryNatural SciencesSpectroscopyCc Double BondFemtosecond Vibrational Spectroscopy
A ketene comes and goes: The first intermediate in the photoredox reaction of o-nitrobenzaldehyde (1) is identified as ketene 2. In a femtosecond IR experiment a resonance at 2100 cm−1 corresponding to the ketene stretching vibration appears less than one picosecond after photoexcitation. The 90-ps decay of this band is a manifestation of a nucleophilic addition to the CC double bond, which is supported by other spectroscopic experiments (IR and Raman).
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Femtosecond broadband stimulated Raman spectroscopy: Apparatus and methods
David W. McCamant, Philipp Kukura, Sangwoon Yoon et al. · Review of Scientific Instruments · 2004 · 299 citations · Full text
David W. McCamant, Philipp Kukura, Richard A. Mathies · The Journal of Physical Chemistry A · 2003 · 197 citations · Full text
Molecular Spectroscopy, Ultrafast Internal Conversion, Engineering +13